Derek Main, a UTA alumnus and director of the Arlington Archosaur site, died Tuesday in his home, according to the Dallas Medical Examiner's office.

Main's cause of death is pending and will be available in eight to 12 weeks, according to the examiner’s office.

Main was the director of the Arlington Archosaur dig site, in which, a new species of crocodile was uncovered in 2011.

Main recently received his doctorate from UTA last month, and his Master of Science in geology from UTA in 2005. He was recently a guest speaker at the TedxUTA series on April 22.

Main taught earth history and dinosaurs and earth systems at UTA. Derek also taught courses at Northlake College and Tarrant County College.

While doing research, Main took his students on monthly field trip excavations to the Arlington Archosaur site.

According to a post on facebook by Main's brother, Darren Main, visitation will be held from 4-6 p.m. on Saturday at Donnelly's Colonial Funeral Home in Irving, while service will be held at 4:30 p.m. on Sunday at Our Redeemer Lutheran Church in Irving.